/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:52:07,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:52:07,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:52:07,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:52:07,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:52:07,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:52:07,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:52:07,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:52:07,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:52:07,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:52:07,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:52:07,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:52:07,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:52:07,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:52:07,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:52:07,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:52:07,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:52:07,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:52:07,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:52:07,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:52:07,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:52:07,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:52:07,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:52:07,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:52:07,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:52:07,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:52:07,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:52:07,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:52:07,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:52:07,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:52:07,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:52:07,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:52:07,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:52:07,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:52:07,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:52:07,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:52:07,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:52:07,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:52:07,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:52:07,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:52:07,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:52:07,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:52:07,506 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:52:07,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:52:07,506 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:52:07,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:52:07,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:52:07,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:52:07,512 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:52:07,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:52:07,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:52:07,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:52:07,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:52:07,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:52:07,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:52:07,514 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:52:07,514 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:52:07,515 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:52:07,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:52:07,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:52:07,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:52:07,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:52:07,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:52:07,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:52:07,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:52:07,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:52:07,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:52:07,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:52:07,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:52:07,516 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:52:07,516 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:52:07,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:52:07,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:52:07,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:52:07,519 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:52:07,519 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:52:07,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:52:07,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:52:07,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:52:07,756 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:52:07,756 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:52:07,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-01-10 18:52:07,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ee5b52a8/1ec031cfc25749b2a1a699bccf3457b2/FLAGc6f014ced [2022-01-10 18:52:08,245 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:52:08,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-01-10 18:52:08,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ee5b52a8/1ec031cfc25749b2a1a699bccf3457b2/FLAGc6f014ced [2022-01-10 18:52:08,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ee5b52a8/1ec031cfc25749b2a1a699bccf3457b2 [2022-01-10 18:52:08,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:52:08,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:52:08,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:52:08,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:52:08,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:52:08,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:52:08" (1/1) ... [2022-01-10 18:52:08,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7156778c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:08, skipping insertion in model container [2022-01-10 18:52:08,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:52:08" (1/1) ... [2022-01-10 18:52:08,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:52:08,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:52:08,557 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7471,7484] [2022-01-10 18:52:08,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:52:08,598 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:52:08,637 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7471,7484] [2022-01-10 18:52:08,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:52:08,681 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:52:08,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:08 WrapperNode [2022-01-10 18:52:08,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:52:08,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:52:08,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:52:08,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:52:08,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:08" (1/1) ... [2022-01-10 18:52:08,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:08" (1/1) ... [2022-01-10 18:52:08,752 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 564 [2022-01-10 18:52:08,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:52:08,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:52:08,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:52:08,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:52:08,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:08" (1/1) ... [2022-01-10 18:52:08,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:08" (1/1) ... [2022-01-10 18:52:08,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:08" (1/1) ... [2022-01-10 18:52:08,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:08" (1/1) ... [2022-01-10 18:52:08,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:08" (1/1) ... [2022-01-10 18:52:08,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:08" (1/1) ... [2022-01-10 18:52:08,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:08" (1/1) ... [2022-01-10 18:52:08,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:52:08,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:52:08,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:52:08,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:52:08,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:08" (1/1) ... [2022-01-10 18:52:08,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:52:08,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:52:08,831 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:52:08,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:52:08,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:52:08,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:52:08,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:52:08,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:52:09,017 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:52:09,018 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:52:09,588 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:52:09,598 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:52:09,598 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 18:52:09,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:09 BoogieIcfgContainer [2022-01-10 18:52:09,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:52:09,601 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:52:09,601 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:52:09,602 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:52:09,604 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:09" (1/1) ... [2022-01-10 18:52:10,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:52:10 BasicIcfg [2022-01-10 18:52:10,032 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:52:10,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:52:10,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:52:10,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:52:10,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:52:08" (1/4) ... [2022-01-10 18:52:10,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a62d46b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:52:10, skipping insertion in model container [2022-01-10 18:52:10,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:08" (2/4) ... [2022-01-10 18:52:10,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a62d46b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:52:10, skipping insertion in model container [2022-01-10 18:52:10,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:09" (3/4) ... [2022-01-10 18:52:10,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a62d46b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:52:10, skipping insertion in model container [2022-01-10 18:52:10,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:52:10" (4/4) ... [2022-01-10 18:52:10,040 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 18:52:10,045 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:52:10,046 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:52:10,096 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:52:10,106 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:52:10,106 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:52:10,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 146 states have (on average 1.7123287671232876) internal successors, (250), 147 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:10,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 18:52:10,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:10,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:52:10,131 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:10,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:10,140 INFO L85 PathProgramCache]: Analyzing trace with hash -893529474, now seen corresponding path program 1 times [2022-01-10 18:52:10,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:10,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699457878] [2022-01-10 18:52:10,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:10,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:10,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:52:10,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:10,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699457878] [2022-01-10 18:52:10,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699457878] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:10,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:10,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:52:10,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066683042] [2022-01-10 18:52:10,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:10,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:52:10,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:10,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:52:10,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:10,699 INFO L87 Difference]: Start difference. First operand has 148 states, 146 states have (on average 1.7123287671232876) internal successors, (250), 147 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:11,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:11,191 INFO L93 Difference]: Finished difference Result 286 states and 465 transitions. [2022-01-10 18:52:11,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:52:11,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-01-10 18:52:11,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:11,211 INFO L225 Difference]: With dead ends: 286 [2022-01-10 18:52:11,211 INFO L226 Difference]: Without dead ends: 218 [2022-01-10 18:52:11,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:11,220 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 142 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:11,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 459 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 18:52:11,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-01-10 18:52:11,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 216. [2022-01-10 18:52:11,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.4837209302325582) internal successors, (319), 215 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:11,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 319 transitions. [2022-01-10 18:52:11,315 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 319 transitions. Word has length 49 [2022-01-10 18:52:11,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:11,316 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 319 transitions. [2022-01-10 18:52:11,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:11,316 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 319 transitions. [2022-01-10 18:52:11,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 18:52:11,319 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:11,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:52:11,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:52:11,319 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:11,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:11,322 INFO L85 PathProgramCache]: Analyzing trace with hash -769550749, now seen corresponding path program 1 times [2022-01-10 18:52:11,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:11,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252848173] [2022-01-10 18:52:11,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:11,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:52:11,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:11,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252848173] [2022-01-10 18:52:11,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252848173] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:11,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:11,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:52:11,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936256679] [2022-01-10 18:52:11,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:11,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:52:11,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:11,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:52:11,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:11,507 INFO L87 Difference]: Start difference. First operand 216 states and 319 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:11,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:11,590 INFO L93 Difference]: Finished difference Result 540 states and 817 transitions. [2022-01-10 18:52:11,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:52:11,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-10 18:52:11,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:11,592 INFO L225 Difference]: With dead ends: 540 [2022-01-10 18:52:11,592 INFO L226 Difference]: Without dead ends: 378 [2022-01-10 18:52:11,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:11,596 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 137 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:11,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 398 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:52:11,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-01-10 18:52:11,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2022-01-10 18:52:11,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.4826666666666666) internal successors, (556), 375 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:11,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 556 transitions. [2022-01-10 18:52:11,668 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 556 transitions. Word has length 52 [2022-01-10 18:52:11,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:11,668 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 556 transitions. [2022-01-10 18:52:11,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:11,668 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 556 transitions. [2022-01-10 18:52:11,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 18:52:11,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:11,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:52:11,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:52:11,671 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:11,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:11,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1454051624, now seen corresponding path program 1 times [2022-01-10 18:52:11,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:11,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512092758] [2022-01-10 18:52:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:11,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:11,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:52:11,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:11,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512092758] [2022-01-10 18:52:11,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512092758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:11,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:11,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:52:11,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128717204] [2022-01-10 18:52:11,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:11,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:52:11,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:11,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:52:11,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:11,791 INFO L87 Difference]: Start difference. First operand 376 states and 556 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:11,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:11,878 INFO L93 Difference]: Finished difference Result 930 states and 1393 transitions. [2022-01-10 18:52:11,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:52:11,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-10 18:52:11,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:11,881 INFO L225 Difference]: With dead ends: 930 [2022-01-10 18:52:11,882 INFO L226 Difference]: Without dead ends: 650 [2022-01-10 18:52:11,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:11,884 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 141 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:11,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 390 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:52:11,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-01-10 18:52:11,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 648. [2022-01-10 18:52:11,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 647 states have (on average 1.4683153013910355) internal successors, (950), 647 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:11,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 950 transitions. [2022-01-10 18:52:11,970 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 950 transitions. Word has length 52 [2022-01-10 18:52:11,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:11,971 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 950 transitions. [2022-01-10 18:52:11,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:11,971 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 950 transitions. [2022-01-10 18:52:11,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 18:52:11,973 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:11,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:52:11,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:52:11,973 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:11,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:11,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1787303043, now seen corresponding path program 1 times [2022-01-10 18:52:11,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:11,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841194961] [2022-01-10 18:52:11,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:11,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:12,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:52:12,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:12,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841194961] [2022-01-10 18:52:12,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841194961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:12,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:12,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:52:12,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260689691] [2022-01-10 18:52:12,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:12,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:52:12,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:12,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:52:12,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:12,099 INFO L87 Difference]: Start difference. First operand 648 states and 950 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:12,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:12,275 INFO L93 Difference]: Finished difference Result 1574 states and 2318 transitions. [2022-01-10 18:52:12,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:52:12,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-10 18:52:12,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:12,280 INFO L225 Difference]: With dead ends: 1574 [2022-01-10 18:52:12,280 INFO L226 Difference]: Without dead ends: 1106 [2022-01-10 18:52:12,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:12,290 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 128 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:12,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 390 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:52:12,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2022-01-10 18:52:12,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1104. [2022-01-10 18:52:12,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 1103 states have (on average 1.4406165004533091) internal successors, (1589), 1103 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:12,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1589 transitions. [2022-01-10 18:52:12,424 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1589 transitions. Word has length 52 [2022-01-10 18:52:12,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:12,424 INFO L470 AbstractCegarLoop]: Abstraction has 1104 states and 1589 transitions. [2022-01-10 18:52:12,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:12,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1589 transitions. [2022-01-10 18:52:12,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 18:52:12,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:12,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:52:12,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:52:12,430 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:12,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:12,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1234643684, now seen corresponding path program 1 times [2022-01-10 18:52:12,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:12,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894030970] [2022-01-10 18:52:12,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:12,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:12,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:52:12,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:12,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894030970] [2022-01-10 18:52:12,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894030970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:12,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:12,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:52:12,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476625417] [2022-01-10 18:52:12,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:12,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:52:12,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:12,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:52:12,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:52:12,846 INFO L87 Difference]: Start difference. First operand 1104 states and 1589 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:15,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:17,272 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:19,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:21,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:24,458 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:26,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:28,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:31,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:31,521 INFO L93 Difference]: Finished difference Result 6934 states and 10049 transitions. [2022-01-10 18:52:31,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:52:31,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-10 18:52:31,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:31,544 INFO L225 Difference]: With dead ends: 6934 [2022-01-10 18:52:31,544 INFO L226 Difference]: Without dead ends: 5990 [2022-01-10 18:52:31,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:52:31,548 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 922 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 22 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:31,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [922 Valid, 1055 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 637 Invalid, 7 Unknown, 0 Unchecked, 17.2s Time] [2022-01-10 18:52:31,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2022-01-10 18:52:32,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 3404. [2022-01-10 18:52:32,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3404 states, 3403 states have (on average 1.4372612400822804) internal successors, (4891), 3403 states have internal predecessors, (4891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:32,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 4891 transitions. [2022-01-10 18:52:32,274 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 4891 transitions. Word has length 53 [2022-01-10 18:52:32,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:32,275 INFO L470 AbstractCegarLoop]: Abstraction has 3404 states and 4891 transitions. [2022-01-10 18:52:32,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:32,275 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 4891 transitions. [2022-01-10 18:52:32,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 18:52:32,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:32,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:52:32,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:52:32,278 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:32,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:32,278 INFO L85 PathProgramCache]: Analyzing trace with hash -332632840, now seen corresponding path program 1 times [2022-01-10 18:52:32,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:32,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357368029] [2022-01-10 18:52:32,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:32,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:32,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:52:32,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:32,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357368029] [2022-01-10 18:52:32,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357368029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:32,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:32,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:52:32,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823135288] [2022-01-10 18:52:32,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:32,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:52:32,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:32,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:52:32,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:52:32,601 INFO L87 Difference]: Start difference. First operand 3404 states and 4891 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:34,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:37,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:41,123 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:43,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:45,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:51,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:51,970 INFO L93 Difference]: Finished difference Result 24310 states and 35019 transitions. [2022-01-10 18:52:51,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:52:51,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-10 18:52:51,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:52,057 INFO L225 Difference]: With dead ends: 24310 [2022-01-10 18:52:52,058 INFO L226 Difference]: Without dead ends: 21252 [2022-01-10 18:52:52,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:52:52,071 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 878 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 22 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:52,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [878 Valid, 1004 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 586 Invalid, 5 Unknown, 0 Unchecked, 13.5s Time] [2022-01-10 18:52:52,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21252 states. [2022-01-10 18:52:55,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21252 to 11518. [2022-01-10 18:52:55,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11518 states, 11517 states have (on average 1.4279760354258921) internal successors, (16446), 11517 states have internal predecessors, (16446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:55,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11518 states to 11518 states and 16446 transitions. [2022-01-10 18:52:55,838 INFO L78 Accepts]: Start accepts. Automaton has 11518 states and 16446 transitions. Word has length 53 [2022-01-10 18:52:55,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:55,838 INFO L470 AbstractCegarLoop]: Abstraction has 11518 states and 16446 transitions. [2022-01-10 18:52:55,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:55,839 INFO L276 IsEmpty]: Start isEmpty. Operand 11518 states and 16446 transitions. [2022-01-10 18:52:55,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 18:52:55,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:55,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:52:55,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:52:55,843 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:55,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:55,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1022621504, now seen corresponding path program 1 times [2022-01-10 18:52:55,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:55,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099877218] [2022-01-10 18:52:55,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:55,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:56,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:52:56,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:56,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099877218] [2022-01-10 18:52:56,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099877218] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:56,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:56,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:52:56,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030806696] [2022-01-10 18:52:56,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:56,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:52:56,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:56,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:52:56,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:52:56,162 INFO L87 Difference]: Start difference. First operand 11518 states and 16446 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:58,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:01,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:13,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:53:13,050 INFO L93 Difference]: Finished difference Result 44134 states and 63220 transitions. [2022-01-10 18:53:13,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:53:13,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-10 18:53:13,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:53:13,113 INFO L225 Difference]: With dead ends: 44134 [2022-01-10 18:53:13,114 INFO L226 Difference]: Without dead ends: 33741 [2022-01-10 18:53:13,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:53:13,131 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 336 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-01-10 18:53:13,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 846 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 614 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2022-01-10 18:53:13,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33741 states. [2022-01-10 18:53:17,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33741 to 11641. [2022-01-10 18:53:17,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11641 states, 11640 states have (on average 1.4264604810996564) internal successors, (16604), 11640 states have internal predecessors, (16604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:53:17,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11641 states to 11641 states and 16604 transitions. [2022-01-10 18:53:17,720 INFO L78 Accepts]: Start accepts. Automaton has 11641 states and 16604 transitions. Word has length 54 [2022-01-10 18:53:17,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:53:17,720 INFO L470 AbstractCegarLoop]: Abstraction has 11641 states and 16604 transitions. [2022-01-10 18:53:17,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:53:17,721 INFO L276 IsEmpty]: Start isEmpty. Operand 11641 states and 16604 transitions. [2022-01-10 18:53:17,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 18:53:17,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:53:17,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:53:17,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:53:17,725 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:53:17,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:53:17,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1315147688, now seen corresponding path program 1 times [2022-01-10 18:53:17,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:53:17,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759216133] [2022-01-10 18:53:17,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:53:17,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:53:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:53:18,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:53:18,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:53:18,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759216133] [2022-01-10 18:53:18,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759216133] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:53:18,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:53:18,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:53:18,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590642814] [2022-01-10 18:53:18,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:53:18,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:53:18,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:53:18,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:53:18,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:53:18,289 INFO L87 Difference]: Start difference. First operand 11641 states and 16604 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)